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Re: [avr-gcc-list] Programming Circuit for AVRDUDE

From: Larry Barello
Subject: Re: [avr-gcc-list] Programming Circuit for AVRDUDE
Date: Sat, 14 Jun 2003 07:34:02 -0700

If you look at the file "avrdude.conf" you will see plain text listing of a 
variety of
"LPT" programmers that it supports.  Just grab a DB25M connector and solder 
your wires
to the pins indicated for the "dt006" or "bascom" programmer and you should be 
ready to
go.  Or, you can take an old LPT cable, or DB25 serial cable (with all 25 
lines), cut
off the unused end, fan out the wires and use the appropriate ones.  I have 
done both
approaches and they all work fine.  You only need five wires:


Looking at the config file, it appears that some of the programmers use the LPT 
port to
power the circuit as well.  That could be nice - if your target is low power - 
the first
one listed, BSD, seems simple enough.

Oh, I noticed that none of the configs mention the GND pins!  Here is a 
schematic for
the "dt006/SAMPLE" programmer:



----- Original Message ----- 
From: "Donovan Parks" <address@hidden>
To: <address@hidden>
Sent: Friday, June 13, 2003 6:28 PM
Subject: [avr-gcc-list] Programming Circuit for AVRDUDE

> Hello,
> I am brand new to the AVR scene and am in the process of trying to setup a
> development environment.  I have avr-gcc up and running and have used AVR
> Studio 4 to simulate some simple programs.  Today I ordered my first AVR (an
> ATmega8L) and would love to have a programmer setup when it arrives.
> My question: is there a simple (i.e. something that could be built on a
> breadboard) programming circuit that can be used to program AVR's.  I have
> read through the AVRDUDE manual and it seems promising, but does not contain
> any information on the circuits themselves.  Are there major limitations to
> programming AVR's in this manner (as opposed to using an STK500)?  What will
> I not be able to do (there is some meantion of certain fuses not being
> accessible in parallel or serial programming modes)?
> Can I use AVRDUDE with an appropriate circuit to program in a bootloader?
> Thanks,
> Donovan
> _______________________________________________
> avr-gcc-list mailing list
> address@hidden
> http://www.avr1.org/mailman/listinfo/avr-gcc-list

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